They're barely in the same league ...
The Windows Subsystem for Android (WSA) allows you to run Android apps on a Windows 11 PC. While the software is still in beta, it’s publicly available to anyone in the Windows Insider Preview program ...
Android apps support is exclusive to Windows 11, a solid incentive for some to upgrade. However, now Windows 10 users can run Windows Subsystem for Android too, thanks to a recent third-party patch.